10

Question 1

Ant sensory or motor inpulse to reach cerebellum must pass through?

Answer 1

Cerebellar relay neuclei

Question 2

The site of Gracile and cuneate nuclei

Answer 2

M.O

Question 3

Site of cerebellar relay nuclei ?

Answer 3

M.O

Question 4

Function of gracile and cuniate nucleus ?

Answer 4

2nd order neuron Receive kinethesia , discriminative touch , vibration from the same side if the body .

Question 5

In gracile and coniate nuclei after receving sensory from same side ?

Answer 5

Decussation of their axons

Question 6

Gracile and coniate nuclei :

Answer 6

1- 2nd order neuron
2- their fibers fuse form internal arcuate fiber
3- their fibers cross forminig medial

Question 7

Accessory (lateral)coneate nucleus function ?

Answer 7

Receive proprioceptive sensation

Question 8

Accessory (lateral)coneate nucleus specific for ?

Answer 8

U.L

Question 9

Which of the following not crossing tract ?

Answer 9

Accessory (lateral)coneate nucleus

Question 10

The fiber passing from M.O to cerebellum only through ?

Answer 10

Inf.cerebellar peduncle

Question 11

Axons originate from Accessory (lateral)coneate nucleus are called?

Answer 11

Coneucerebellar tract or dorsal external arcuate fbers

Question 12

Which of the following nuclei is misplaced pontine nucleus ?

Answer 12

Arcuate nuclei

Question 13

Arcuate nuclei spicially located in ?

Answer 13

Pyramid with CST

Question 14

Explain the pathway of arcuate nuclei?

Answer 14

1- Receive fibers from cerebral cortex by pyramidal pathaway
2- their axons extend forming “arcuato-cerebellar fibers”
3-arcuatocerebellar fibers are 2 types
1) stria medullaris of the 4th ventricke (oppisite side)
2)ventral external atcuate fibers (same)

Question 15

How many stria medullaris do we have?

Answer 15

TWO :
1-SM of the 4th ventricle
2- SM thalamai

Question 16

what are the non-cranial nerve nuclei of the midbrain ?

Answer 16

1- substantia nigra
2-red nuclei
3-tectum

Question 17

any extrapyramidal tract originate from pons is

Answer 17

is extensor

Question 18

horner’s syndrome caused due to ?

Answer 18

interruption of sympathetic NS above the level of T1

Question 19

symptoms of horner’s syndrome

Answer 19

P.M is FEAr ;(

1. Ptosis: drooping of the upper eyelid due to paralysis of Muller s muscle.
2. Miosis: constriction of the pupil due to paralysis of the dilator pupillae.
3. Anhidrosis: dry face due to paralysis of the sweat glands.
4. Enophthalmos: retraction of the eyeball.
5. Flushing: the face is red and warm due to vasodilation of skin blood vessels.